General Science and Health Awareness
What to master
Basic, exam-friendly science: the human body (circulatory, respiratory, digestive, nervous systems), nutrition and vitamins, hygiene and sanitation, common diseases and their causes (bacteria, viruses, parasites), first aid, and simple physics/chemistry concepts (states of matter, energy, simple machines).
Health awareness for officers
Understand personal and public hygiene, disease transmission (water-borne, air-borne, vector-borne, contact), immunisation, first aid for wounds, fractures, burns, and fainting, and the basics of substance abuse and mental wellbeing.
Traps to expect
- Cause confusion: malaria is transmitted by the Anopheles mosquito (a parasite), not by dirty air; cholera is water-borne.
- Vitamin/deficiency pairs: vitamin A and night blindness; vitamin C and scurvy; iron and anaemia; iodine and goitre.
- First aid order: safety first, then check response, then call for help, then treat.
- Energy and matter: distinguish kinetic from potential energy; know the three states of matter and changes of state.
Rule of thumb
For deficiency or transmission questions, recall the single strongest association (one vitamin → one classic deficiency) rather than trying to reason from scratch.
Worked example
"A deficiency of vitamin C causes ___" - scurvy. Scurvy is the classic pairing; rickets (vitamin D) and night blindness (vitamin A) are typical distractors.